Conveyer



July 12, 1938. R. s. IJACOBSEN 2,123,189

CONVEYER Original Filed March 12, 1934 2 Sheets-Sheet 1 y 1938. R. s. JACOBSEN 2,123,189

CONVEYER Original Filed March 12, 1934 2 Sheets-Sheet 2 a Sfaaafiaem l each cycle of movement of the trough, whereby ID, as shown. The first crank arm, the one at 30 venience of illustration, it being understood. that o e. t e e movement of the trough is first 30 55 form, and'on the top of this frame or bed there onthe first crank arm 8 previously described. 55

Patenteddulylgl938 V, e I 2,123,189

UNITED STATES PATENTOFFICE Application March 12, 1934, Serial No. 715,172 b Renewed December I, 1936 u 150mm,. (oi. 198-220)' This invention relates to conveyers, and more are transverse rock shafts 4 having cranks or particularly to thosethat arein the form of a eccentric end portions 5, as shown. These eccenri trough having some sort of movement that retric cranks are in effect arms pivoted at their suits in moving the materials intermittently upper ends at fixed points on the trough struc- 5 therein, from one end of the trough to the other,- ture and at their lower ends on the body of the 5 for various purposes. machine, as illustrated in Fig. 4 of the drawings. Generally stated, the object of the invention is Brackets 6 are rigidly secured to the trough, at a to provide a novel and improved construction opposite sides thereof, and have their lower ends and arrangement whereby a conveyer trough of provided with bearings I for, the eccentric end 10 this kind has movement upward and then forportions 5 previously mentioned. Each shaft is 10 ward, to throw the materials forward a distance provided between the sides of the frame or bed in the trough, and then has backward and downwith a downwardly extending crank arm 8, one wardmovement under the materials, in a mancrank arm having its lower end provided with a ner that leaves the latter a distance ahead for pivotal point 9, and each having a pivotal point the action of ,a trough conveyer of this kind is the right, is connected to the next crank arm more effective to intermittently feed the mate- 'by a link ll extending from the pivotal point rials forward in a satisfactory manner. in. on the first crank arm to the pivotal point It is also an object to provide certain details l0 on -the second crank arm, and this system of and features of construction tending to increase crank arm connection is employed from one end 20 the general efficiency and desirability of a vibraof the apparatus to the other, whereby the rock tory trough conveyer of this particular character. shafts 4 are connected to rock in unison during To the foregoing and other useful ends, the 'the operation of the conveyer. 1 invention consists in matters hereinafter set Looking at Fig. 4 of the drawings, it will be forth an'dclaimed and shown in the accompanyseen that a movement of the link II to the left, 25

ing drawings, in which a with the connection shown, will cause the eccen- Fig. 1 is a side elevation of a trough conveyer t end'portions 5 to move rom the r normal involving the principles of the invention, 'showpositions upwardly and forwardly to their upper v ing certain portions thereof broken away-for con- Positions, indicated at in d a a Therethe trough can be of any suitable or desired upward and then forward and substantially horilength necessary for any particular situation, or zontal, so that the entire forward stroke of the for any particular kind of work. trough is first slow and then gradually increases Fig. 2 is a horizontal section on line 2--2 in in speed untilthe maximum forward movement Fig. I of the drawings. is reached at the point l2, thus throwing the 35 Fig. 3 is a transverse section, on a larger scale, materials forward a distance in the trough. Then on line 3-3 in Fig. 1 ofthe drawings. the backward movement of the trough, the entire Fig. 4 is a diagrammatic view illustrating the backward stroke thereof, starts quickly and ends particular motion of the conveyer. trough, in the w y. the t ono the backward moveoperation thereof. X ment is more vertical than horizontal. 40

Fig. 5 is a similar diagram, in which the ap- Any suitable or desired means can be employed paratus and operation are the same as in Fig. 4,. l for rocking the shafts 4, to produce the described but showing the entire apparatus disposed at an specific movement of the trough. As shown in angle, instead of horizontally; Figs. 1 and 2 ofthe drawings, a horizontal shaft As thusillustrated, the invention comprises a I3 is arranged horizontally on the frame or 45 sheet metal trough I, or a, trough of any suitable bed of the apparatus, in bearings l4 thereon, material, preferably provided with a V-shaped and is provided with a pulley l5 that receives bottom 2 of obtuse angle,-so that the materials power through a belt 16 from a smaller pulley I in the trough will have'a tendency to crowd tight- I! on a shaft l8 mounted transversely below the ly together transversely thereof, thereby in effect said frame or bed, said shaft l8 being provided 50 increasing the frictional grip of the trough on with apulley ill for the transmission of power the materials, for the purpose of more effectively thereto". At its other end, the shaft i3 is profeeding the materials forward. vided with a crank plate 20 having its crank A frame or bed 3 is provided, of any suitable connected by a link 2| with the pivotal point III \Zrhe rotation of the shaft It, and the consequent reciprocation of the link 2|, will cause the rock shafts 4 to rock in unison and the consequent opthat the materials are moving intermittently to the right, as indicated by the arrow 22 in Fig. 1 of the drawings, and the arrows 23 and 24 in Figs. 4 and 5 of the drawings. With the motion shown and described, short strokes of the trough are sufncient, as high speed is possible, thereby in effect keeping the materials moving practically continuously forward in the trough, although the movement of the latter is in fact intermittent.

Looking at Figs. 4 and 5 of the drawings, it will be seen that any given point on the trough traverses substantially the upper rear quarter of a circle, so that the actual forward motion of the trough is increasingly faster, while its actual backward motion is increasingly slower. The actual upward movement of the trough is increasingly slower, while its actual downward movement is increasingly faster. But in figuring these variable speeds allowance should be made for the effect of the crank plate II and periods of speed of the link 2| previously mentioned.

Thus it will be seen that the up stroke terminates approximately in horizontal motion a distance from said vertical line which is substantially less than the length of the stroke, while the down stroke terminates approximately in vertical motion a distance from the horizontal line, with the middle point of each stroke substantially midway between the vertical and the horizontal, thus insuring relatively high speed for the middle portion of each stroke, in each direction, whereby the speed tapers oil to practically zero at the end of each stroke, but increases practically from zero to maximum at the beginning of each stroke, and with this motion and speed the materials are on the trough during the end portion of each upward movement or stroke, and the trough moves back under the materials before the latter again rest on the trough.

With the arcuate stroke provided, and the speciiled speed of travel thereof, it will be seen that the materials will leave the trough at the middle of the up stroke thereof, with a trajectory of substantially or approximately forty-five degrees, whereby the materials are off the trough during the slowing up portion of each up stroke. A tra- Jectory of forty-five degrees, of course. is calculated to insure the greatest distance of travel from the point of projection to the point of final descent, and the operation of the crank arms, in the manner explained, insures that desirable result, tending to increase the speed of travel of the materials from one end of the trough to the other, by practically jumping the materials ahead a maximum distance, for each up stroke of the trough, with practically no ret rograde movement of the materials between the successive forward Jumps thereof.

This is all true of both Fig. 4 and Fig. 5, of coursegas in the latter the arms between the points I and 5 have the same motion that these arms have in Fig. 4, relative to the trough, and

ineachcasethearmslswingequidistantatopposits sides of lines at right angles to the trough 4, with the said imaginary vertical and horizon-,

tal lines, all turned or tilted at an angle.

The proper speed of operation, for any given materials, can be determined by experimenting with diiferent speeds, until the desired result is obtained.

What I claim as my invention is: v

1. In a conveyer apparatus, the combination of a trough for holding the materials to be conveyed, supporting mechanism for giving the trough a forward stroke that is upward and increasingly horizontal, on the line of the upper portion of a circle, in rear of the vertical center line of said circle, and above the horizontal center line thereof, and a back stroke on said are of the circle that is increasingly vertical, together with devices for operating said mechanism to thereby cause said back and forth arcuate motion of the trough to extend more than half the distance between said lines, with an appreciable curvature, so that the up stroke terminates approximately in horizontal motion a distance from said vertical line which is substantially less than the length of the stroke, and the down stroke terminates approximately in vertical motion a distance from the horizontal line, with the middle point of each stroke substantially midway between the vertical and the horizontal, said mechanism comprising transverse rock shafts below the trough, having eccentric end portions, rigid brackets extending'downward on the sides of the trough and having bearings for said eccentric end portions, and means connecting said shafts, movable in one direction while the trough is moving in the opposite direction, forming counterbalancing means for the trough, said devices comprising power means for rocking said shafts, for causing said eccentric end portions to each travel upwardly and forwardly on the line of said circle, and then backwardly and downwardly.

2. In a conveyer apparatus, the combination of g a trough for holding the materials to be conveyed, supporting mechanism forgiving the trough a forward stroke that is upward and increasingly horizontal, on the line of the upper portion of a circle, in rear of the vertical center line of said circle, and above the horizontal center line thereof, and a back stroke on said are of the circle that is increasingly vertical, together with devices for operating said mechanism to thereby cause said back and forth arcuate motion of the trough to extend more than half the distance between said lines, with an appreciable curvature, so that the up stroke terminates approximately in horizontal motion a distance from said vertical line which is substantially less than the length of the stroke, and the down stroke terminates approximately in vertical motion a distance from the horizontal line, with the middle point of each stroke substantially midway between the vertical and the horizontal, said devices providing relatively high speed for the middle portion of the stroke, in each direction, and providing relatively slow starting and stopping for each stroke, so that the speedtapers of! to practically zero at the end of each stroke, and increases practically from zero to maximum at the beginning of each stroke, whereby the materials are off the trough during the end portion of each upward movement, said mechanism comprising transverse rock shafts below the trough, having eccentric end portions, rigid brackets extending downward on the sides of the trough and having bearings for said eccentric end portions, and means connecting said shafts, movable in one direction while the trough is moving in the opposite direction, forming counterbalancing means for the trough, said devices comprising power means for rocking said shafts, for causing said eccentric end portions to each travel upwardly and forwardly on the line of said circle, and then backwardly and downwardly.

3. A conveyer apparatus comprising an oscillating trough mounted on supports comprising in efiect crank arms so constructed that the trough supporting end of each of the arms moves through more than one-half of the upper rear quarter of a circle, between right angle lines intersecting the axis of the arms, one line parallel with the trough and the other line at right angles to it, and thus has an arcuate path practically equally divided by a radial line midway between said other lines.

4. A structure as specified in claim 3, comprising other crank arms in effect forming with said first mentioned arms a plurality of bell cranks, and means for communicating power to each bell crank and thereby through the cranks to the trough to oscillate the latter.

5. A structure as specified in claim 3, comprising other crank arms in effect forming with said first mentioned arms a plurality of bell cranks, and means for communicating power to each bell crank and thereby through the cranks to the trough to oscillate the latter, said power communicating means comprising a counterbalancing member connecting together the ends of said last' mentioned arms.

6. A structure as specified in claim 3, comprising means including a counterbalancing member connecting said arms together.

7. A structure as specified in claim 3, comprising means including a counterbalancing member connecting said arms together, and means for communicating operating power to said member to oscillate said trough.

8. A structure as specified in claim 3, comprising means having a pendulum-like swing to counterbalance said trough.

9. A structure as specified in claim 3, said trough being horizontally disposed.

10. A structure as specified in claim 3, said trough being inclined.

11. A conveyer apparatus comprising an oscillating trough mounted on supports comprising in effect bell cranks so constructed that the outer trough supporting end of each of the arms move through the upper rear quarter of a circle, whereas the outer end of each of the other eifective arms moves through an arcuate path equally divided by a line at right angles to the trough and intersecting the axis of the bell crank.

12. A structure as specified in claim 11, having counterbalancing means connecting together said other arms.

13. A structure as specified in claim 11, having means to communicate power to each of said other arms, to operate the trough.

14. A structure as specified in claim 11, said trough being horizontal.

15. A structure as specified in claim 11, said trough being inclined with its discharge end upward.

RICHARD S. JACOBSEN. 

